Dayid hathaway



D. HA THAWAY.

'- Stove Grate.

Patented Nov 9, 1869.

MPETERS, FHQTQ-LITHDGRAFHER WASH" GYON D C ilhtited swa haunt Gtihiinr.

Letters Patent No. 96,588, dated November 9, 1869.

STOVE-GIBATE.

The Schedule referred to in these-Letters Patent and making part Of thesame.

To all whom it may concern:

Be it known that I, DAVID HATHAWAY, of the city of Troy, county ofRensselaer, and State of New York,

have invented a new and useful Improvement in Stove- Grates; and dohereby declare that the following is a full, clear; and exactdescription thereof.

A, Figure 1, represents the stationary frame, which may be 'placed inthe fire-chamber of stoves, ranges,

860., and secured in a horizontal position, in the usual manner.

B and G, fig. 1, are two sliding bars, (orsystem of bars,) whichconstitute the bed of the grate, and upon which fuel is to be placed.

The bar B rests and slides upon the steps D E F G H I, attached to theends of the stationary frame, each end of this frame being counterparts.

The bar 0 has a journal at each end, marked, respectively, J and K.

fi These journals rest and slide in the loops L and M,

These journals, as also the other parts-of the ends of this bar, passunder the stationary frame.

N and O, figs. 1 and 2, are pivots, attached to thecentres of the bars13 and O Figure 2 being a vertical section on the broken line B S, fig.1.

lfigure 6 is a vertical section on the broken line V W, fig. 1.

Figure 5 presents a part of each of the bars B and O, the letters J '1 UK designating corresponding parts in fig. 1. I

In fig. '5, the grooved arms TX and U Y are fully exhibited, the upperportion only of which isseen in fig. 1.

In these grooved arms, that part of the bar 0 which carries the journalsJ and K. has a sliding motion to the right and left, as at 2 and 3, fig.5.-

W'hen the-bars or bed of the grate is being operated,

for the purpose of clearing ashes fi'om the fuel, the

ends of that part of the bar 0, fi 1, which carries the journals J andK, and slides in the grooved arms, comes in contact with the loops inwhich the journals slide, as at 4. and 5, fig. 1, or 4and 5, fig. 5,preventing the bar from being moved so far in either direction as toadmit of thejournals, being raised out of the loops.

When the bar 0 is moved to the right, the bar B moves to the left,alterlfitting each with the other. During this movement, the ends of thebar 13 which slide on the steps are brought in contact with the uprightpart of the steps, as at 6 and 7, fig. 6.

- The drawings represent the bars in a central position with referenceto the stationary frame.

The bars are operated, as described above, by means of the lever P,Figure 3, partially sceu at fig. 1, and

shown in section at fig. "2, by placing the wrench, Fig-' ure 4, on theend of the lever, and moving it to the right and left, as indicated bythe curved broken line 89, fig. 1.

The grate is'dumped by placing the wrench on the end of the lever, at P,in nearly-a vertical position, and'pressing down the endof the lever,thereby tilting the bed of the grate (the bars B and G) into a verticalposition, as indicated by the broken curved lines in fig. 2, also infig.- 1. I

The manner of connecting the-lever P with the pivots N and O isfullyshown by figs. 2 and 3.

It will be seen, by'reference to fig. 2, that the faces.

of the bars B and O, fig. 1, are held in the same plane by the lever P.In its action, this is-a compound lever, foi',-supposing the bar 0 to beatrest, (which is sometimes the case,) the pivot N is the fulcrum inmoving the bar B, constituting what is termed, in mechanics, a lever ofthe first kind. I

Now, suppose the bar B to bc at rest, the pivot O is the fulcrum inmoving the bar 0. In this case, the lever is of the second kind. Whenthe bed is tilted into a vertical position, tha part of the grooved armsmarked X and Y in figs. 5 and 6, comes in contact with the steps D andG, figs. 1 and 6, preventing the bars from being turned over so far asto allow the points 4 and 5, figs. 1 and 5, of the bar '0 to passintothe loops far enough to admit of the bar being dismounted. This,however, is required to be done (before the bar B is attached to the bar0) in mounting the grate.

The bars B and 0 are held in their proper relative position by thegrooved arms, in combination withthe compound lever.

In this arrangement for a stove-grate,

What I claim as my invention, is-

1. The grooved arms, substantially as and for the purpose specified.

2. The compound lever, constructed and acting as set forth.-

3. The connectionand operation of the sliding bars by means of thecompound'lever, in combination with the grooved arms, as set forth inthe' specification,

' DAVID HATHAWAY.

Witnesses:

HIRAM "1. GAY, JOHN P. .SAYLES.

